Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
CA 02597026 2007-08-03
ROUNDS COUNTER
PURPOSE OF THE INVENTION
This invention refers in general to an ammunition clip that can be fitted in
an automatic
and/or semiautomatic breech-loading firearm.
STATUS OF THE TECHNIQUE
Currently, the perfectioning of automatic and/or semiautomatic breech-loadirig
firearms has increased the rounds storage capacity of clips; for example a
semiautomatic pistol can store more than twelve rounds in a clip.
In this type automatic and semiautomatic firearms, the task of counting the
number of
rounds still left in the clip loaded in the firearm is a burdensome, difficult
and tiresome
task that can be even more complicated when the user handling it is under
pressure
for his own life.
Therefore there is a need to develop a system that can count the rounds still
left in
the clip fitted to the automatic or semiautomatic breech-loading firearm.
Furthermore, the round counter system shows the number of rounds left in the
clip
on a display located on the firearm casing or body.
CHARACTERIZATION OF THE INVENTION
This invention seeks to resolve or reduce one or more of the inconveniences
exposed above using an ammunition clip for automatic and/or semiautomatic
firearm
such as in claim 1. Executions of the invention are established in the
dependent
claims.
The ammunition clip includes a frame on the inside that contains an
ammuriition
push mechanism that is displaced by a first spring between the base on one end
of
the frame and a second end of the frame, entry/exit hole for ammunition
rounds; the
clip includes a distance detection means that measures the distance between
the
push tile and the base of the clip.
The distance is sent to a programmable logic means that depending on the
distance
received determines the number of ammunition rounds stored in the clip fitted
to the
firearm. As a result, a shooter can tell at any time how many rounds are
stored in
the clip fitted to the firearm.
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Another purpose of the invention is to count the amount of ammunition consumed
by
the firearm in order to determine the useful life remaining of the firearm
parts
thereof.
Another purpose of the invention is to ensure the visibility of the items
selected and
displayed on a display screen by the shooter when making use of the gun.
Another purpose of the invention is to provide a partial count of shots made
with a
given clip.
Another goal of the invention is to provide a counter of ammunition rounds
stored in a
clip loaded in a small size automatic and/or semiautomatic firearm that is
lightweight
and cheap.
BRIEF DESCRIPTION OF THE FIGURES
A more detailed explanation of the invention is provided in the following
description
based on the figures attached that:
figure 1 shows an expanded perspective view of a clip in accordance with the
invention,
figure 2 shows a section perspective view of a clip in accordance with the
invention,
figure 3 shows another section perspective view of a clip in accordance with
the
invention,
figure 4 shows an expanded perspective view of a pistol firearm in accordance
with
the invention,
figure 5 shows a perspective view of the inside of firearm handle covers in
accordance with the invention,
figure 6 shows a perspective view of the outside of firearm handle covers in
accordance with the invention,
figure 7 shows a perspective view of an automatic and/or semiautomatic breech-
loading firearm with the clip in accordance with the invention, and
figure 8 shows an elevation view of the clip fitted into the automatic and/or
semiautomatic breech-loading firearm in accordance with the invention.
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DESCRIPTION OF THE INVENTION
Below, in reference to figure 1, is a pieced clip 29 of rounds 21 or box type
container
for an automatic and/or semiautomatic breech-loading firearm 11, which stores
a
variety of rounds 21 piled one on top of the other 21.
Now with regards to figures 1, 2 and 3, the clip 29 includes a hollow cross
section
polygonal frame or shell 27, substantially rectangular, suitable for the
dimensions of
the rounds 21 that will be stored in the clip 29.
The near end of the clip 29 fitted into an automatic and/or semiautomatic
breech-
loading firearm 11 includes an entry/exit hole for round 21 of clip 29 access
aperture;
i.e.: fitting hole located in the upper part of the clip 29 when it is
supported at the
opposite end in a substantially vertical position.
The other end, opposite to the clip 29 access hole, is closed by a surface or
base 28
of the clip 29 that closes it and serves and the seating or support to a first
push
spring 24, of the clip 29, that moves an ammunition push means 22
longitudinally
such as a tile between the empty clip 29 position, the spring is unstressed
and full
clip 29, the first spring 24 is compressed.
Consequently, the rounds 21 stored in the clip 29 are moved towards to the
clip 29
entry each time a round 21 is expelled out of the clip 29, or towards the base
28
each time a round 21 is added through the clip 29 access hole.
As a result of the push effort made by the first spring 24, the tile 22 moves
upward
or downward depending on if a round 21 is extracted or introduced in the clip
29
respectively.
A distance detection means 25 measures the distance between the tile 22 and
the
base 28. The distance perceiver 25 is located in a place configured for such
purpose
between the tile 22 and the base 28 of the clip 29. So that when the tile 22
moves
longitudinally, the distance perceiver 25 generates an electric signal that
indicates
the longitudinal movement made by the tile 22, either upward towards to the
access
or downward towards the base 28 of the rounds 21 clip 29.
The distance perceiver 25 includes a first set of electric terminals 26
adapted to
make electric contact with a second set of electric terminals 41 located at
the tip 42
of the firearm 11, see figures 4, 7 and 8. Obviously, both sets 26, 41 or
terminals are
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facing when the clip 29 is loaded in the tip 42 of the firearm 11.
The first set 26 of electric terminals can be placed, for example, at the
entrance of
the clip 29 fitting location in the case of partially fitted clip 29 (sub
rifle, assault rifle,
lightweight machine gun, etc.), displayed in figures 7 and 8; or in the other
end of
the clip 29 casing 27 when totally fitted inside the handle of a firearm 11
such as
pistol, displayed in figure 4. The location of the two sets 26, 41 of
terminals shall be
such that they provide a robust electrical connection that is practical and
maintenance free, ideal for tough usage of the firearm 11 in aggressive
environments, i.e.: in the open air.
The number of electrical terminals required may vary depending if the clip 29
shell 27
is made of steel and if such steel shell 27 is used as mass for the electric
circuit that
is part of the rounds 21 counting system. In this case, the number of
terminals
required for each set 26, 41 shall be less than when the clip 29 casing 27 is
not
used as mass for the electric circuit.
With regards to figure 5, the second 26 set of contacts, in turn, is connected
to a
programmable logic means, microprocessor, that can count the rounds 21 stored
in
the clip 29 based on the signals received from the distance perceiver 25.
The microprocessor 71 is located in a location provided for such purpose in
the
firearm 11 handle between the handle frame and the covers 73.
When the clip 29 is fitted in the firearm 11, both first 26 and second 41 of
electrical
terminals are in electrical contact and allow an electric signal, relative to
the
movement of the push tile 22, to be sent from the distance perceiver.25
through
both sets 26, 41 of contacts and electric connections to the microprocessor 71
that,
in turn, are also connected via electrical 6 connections to a display 13,
located in the
body or casing of the firearm as such and in sight of the shooter when
pointing the
firearm 11 to a potential target. For example, the display 13 can be located
near the
firearm 11 sights and, therefore, within the visual sights of the shooter,
displayed 4,
5, 6 and 7.
The location of the display 13 in the casing of the firearm 11 shall be such
that the
information displayed on the display 13 can be read by the shooter in a
variety of
positions between the firearm 11 and shooter.
When the microprocessor 71 receives an electric signal from the distance
perceiver
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25, it will increase by one the total number of shots made by said firearm 11
and in
turn reduces by one the number of rounds 21 stored in the clip 29. The result
of both
counts can be displayed on the display 13; by default it shall display the
amount of
rounds 21 currently stored in the clip 29, but it shall be possible to view
the total
5 number of shots made by the firearm 11.
In summary, the total counter functions counts the total amount of ammunition
consumed by the firearm 11 during its usage, and the partial counter function
appears immediately on loading a clip 29 in the firearm 11. Once the clip 29
is
loaded, the display 13 will show the number of rounds 21 stored in it, which
shall be
any number between zero, empty clip 29, and the maximum number of rounds 21
that can be stored in the clip 29. The number of the rounds 21 to be
controlled shall
be solely limited by the size of the clip 29, as there are no restrictions in
terms of the
counter.
It should be noted that the rounds 21 clips for automatic and semiautomatic
breech-
loading firearms 11 are normalized; therefore, the microprocessor 71 shall be
capable of calculating, once a clip 29 has been fitted, the total number of
rounds 21
currently stored in the clip 29 fitted in firearm 11 based on the signals
received from
the distance perceiver 25. Given that a clip 29 is not always fitted in a
firearm 11,
such clip 29 must store the maximum number of rounds 21 that it can store,
situation of full clip 29.
Returning to figures 1, 2 and 3, the distance perceiver 25 is connected to the
tile 22
through a connection interface means 23 such as a second 23 spring; i.e.:
finely
calibrated spirals, so that its near end is connected to the distance
perceiver 25 and
the other end is connected to the lower part of the push tile 22. The distance
perceiver 25 receives from the second 23 spring a signal that is the result of
extending the second 23 spring. The signal received varies between a value
that
corresponds with the maximum number of rounds 21 that can be stored in a clip
29
and a value that corresponds to the minimum number of rounds 21 stored in the
clip
29.
The signal received by the distance perceiver 25 is converted into an electric
signal
that is sent to the microprocessor 71, which transforms it into a counter unit
visible
on the display 13.
The mechanical tension of the second 23 spring, in its maximum distressed
position,
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is very small and does not interfere with the push function made by the first
24
spring.
Similarly, the connection provided by the interface means 23 can be performed
with
an infrared beam; i.e.: the variation of tile 22 position is calculated using
an infrared
light emitting diode 33 that emits an infrared signal reflected by the
underside of the
tile 22, and received in a receiving diode 34; both diodes 33, 34 are
connected to
the distance perceiver 25. Consequently, the signal received by the distance
perceiver 25 from the receiving diode 34 is the result of the distance between
tile 22
and the clip 29 base 28. Similarly, the signal received varies between a value
that
corresponds with the maximum number of rounds 21 that can be stored in the
clip
29 and a value that corresponds with the minimum number of rounds 21 stored in
the clip 29.
The tile 22 includes a reflecting surface on the underside, suitable to
reflect an
infrared light beam. Both the projected and reflected beam travel through an
empty
space between the spirals of the first 24 spring and no elements external to
the
system interfering in their course. The distance perceiver 25 transforms the
signal
received into an electric signal that is sent to the microprocessor 71 that
turns it into
a visible counter unit.
In another execution, the distance perceiver 25 can include a variable linear
magnetoresistance and a permanent magnet secured to the ammunition push tile
22, so that the value of the magnetoresistance shall vary depending on the
distance
of movement of the permanent magnet.
Another execution of the distance perceiver 25 can include a series of
ultrasounds
emitters-receivers, so that when the tile 22 moves, it generates a variation
in the
internal volume of the clip 29 between the tile 22 and base 28.
In another execution, the perceiver 25 includes at least one magnetic
transducer
located under the handle covers 73 of the firearm 11, in a location 74
provided' for
such purpose between the cover 73 and handle, or other suitable location of
the
firearm 11. Furthermore, a number of permanent magnets are included, suitable
for
the number of transducers, secured to the tile 22 or the first push spring of
the tile
24. The electrical signals provided by the transducers shall depend on their
position
with regards to the magnet or magnets, the signals generated that are sent,
through
electrical connections to the microprocessor 71.
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On loading a new round 21 into the firearm 11 chamber, the tile 22 only moves
a
few millimetres. In addition during this movement the tile 22 suffers small
oscillations
so that its exact position is not always the same for one same number of
rounds 21
in the clip 29. Therefore and to determine the number of rounds 21 remaining
exactly in the clip 29, the microprocessor 71 executes a calculation algorithm
based
on the signals received from the transducers. The result of executing the
algorithm
is compared to a table that has been stored previously in memory connected to
the
microprocessor 71. The result of the comparison indicates the number of rounds
21
still left in the clip 29.
The recording of the table in memory is governed by the microprocessor 71,
which
is activated in recording mode. The recording phase requires firing a complete
clip
29 after which the table shall be automatically established and recorded.
After
leaving the recording mode, the rounds counter is ready for immediate use.
This
operation can be performed as often as is required.
In order to suitably and sensibly detect the magnet by the transducers, the
clip 29
frame 27 must be built of paramagnetic material. Otherwise the frame 27 should
have a rectangular slot pointing towards the magnetic transducers, of a few
millimetres wide throughout its length, open or closed with paramagnetic
material.
The rounds counters, in addition to having an on/off switch, as described
further on,
can, alternatively, be activated automatically on firing. Initially it will be
in idle mode,
with display 13 off. It shall be activated on firing and return to idle mode
after a given
period of time without using the firearm. This activation can be performed
using
impact or piezoelectric transducers or with the aforementioned magnets.
The microprocessor 71 can be connected to a data input/output interface, not
displayed, that includes an alphanumeric keyboard and functions such as
vertical
movement up and down, which can be used to perform data input and output to
and
from the microprocessor 71. Furthermore, some keys can be associated to
certain
characters and/or functions.
The keyboard can change, in manual mode, from one information displayed on the
screen and another easily and quickly; i.e.: if the initial option was to
display the
number of shots corresponding to the clip 29 fitted in the firearm 11 at a
given time,
pressing the corresponding button can display the total number of shots made
with
the firearm 11.
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Returning now to figures 4, 5 and 7, the firearm 11 fitted with the clip 29 of
this
invention, includes an on/off switch 12 so that the microprocessor 71 does not
perform certain functions and/or no information is displayed in the display
13. For
example, when the firearm 11 is not going to be used or when the shooters
empties a
clip 29 of rounds 21 without removing the clip 29 from the firearm 11, not
consuming
energy from a power source, a battery or similar.
The display 13 of the firearm 11 can show information selected by the shooter
from
the possible information that can be provided by the microprocessor 71 such as
the
total number of shots taken, number of rounds stored in the clip 29 currently
fitted in
the firearm 11 or other similar information. The firearm 11 shooter only has
to select
the type of information to be displayed on screen through the keyboard.
As already indicated, the display 13can be placed on top of the firearm 11, on
one
side, for example, on the opposite side of the expulsion hole, so that the
display 13
can be viewed at all times by the shooter when taking a shot, i.e.: the
display 13
shall be facing the shooter.
Furthermore, display 13 can be moved on the axis of the firearm 11 barrel;
i.e.: not
being vertical to the barrel so that the display 13 is substantially moved
from an
imaginary line that connects the slights of the firearm 11, enabling the user
to use
the firearm 11 sights when shooting.
The entire counter system is powered with electricity from the power source
that
feeds all the rounds 21 counter system circuits. The battery is connected to
the
perceiver 25, display 13 and microprocessor 71 through electrical connections;
the
battery is of reduced size and long duration such as a Lithium battery that
are long
lasting. The battery is located in position 74 provided for such purpose
between a
cover 73 of the handle and the casing of the handle, for example, displayed in
figure
5.
The battery can be rechargeable or throw-away. If rechargeable, it shall
include
contacts for such purpose at the connector that connects the alphanumeric
keyboard,
for example.
In order to extend the useful life of the battery as much as possible, the
counter
system shall be powered on/off with a switch 12 provided for such purpose, so
that
when the firearm 11 is not being used, the switch 12 shall be in the off
position and,
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when the gun 11 will be used, the switch 12 is in the on position. In the
event the
switch is off, the microprocessor 71 shall continue to receive power in order
to
maintain certain information stored such as the total number of shots made
with the
firearm 11.
The display 13 can be either LCD, electroluminescent, plasma or similar,
because
these technologies involve less consumption of electricity. Furthermore, the
screen
13 can be touch sensitive, therefore, some data input functions could be
performed
through the screen 13.
The executions and examples established in this report are presented as the
best
explanation of this invention and its practical application in order to allow
experts on
this matter to put the invention into practice and use it. However, the
experts on this
technique will realize that the description and examples above have been
presented
for illustrative purposes only as an example. The description provided is not
destined
to be comprehensive or limit the invention to the precise form described. Many
modifications are variations are possible in light of the above without
excluding the
spirit and scope of the following claims.
